3 May 2011 18:06
3 May 2011 18:20
Re: 5.1 RAID5 write performance
Matthias Scheler <tron <at> zhadum.org.uk>
2011-05-03 16:20:52 GMT
2011-05-03 16:20:52 GMT
On Tue, May 03, 2011 at 06:06:44PM +0200, Edgar Fuß wrote: > mrg asked me to build a kernel with HZ=1024 and test. > It got worse. > > Anything else I can test or instrument? You could try turn off RAIDframe parity maps (which are a very useful feature in general) with "raidctl -M no raid<n>", reboot your machine afterwards and repeat your performance tests. Kind regards -- -- Matthias Scheler http://zhadum.org.uk/
4 May 2011 17:55
Re: 5.1 RAID5 write performance
Edgar Fuß <ef <at> math.uni-bonn.de>
2011-05-04 15:55:26 GMT
2011-05-04 15:55:26 GMT
> You could try turn off RAIDframe parity maps (which are a very useful > feature in general) with "raidctl -M no raid<n>", reboot your machine > afterwards and repeat your performance tests. Oh, I was not aware that parity maps had made it into 5.1 No, sorry, that doesn't help.
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